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  /*
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
   * 
   * Copyright 1997-2008 Sun Microsystems, Inc. All rights reserved.
   * 
   * The contents of this file are subject to the terms of either the GNU
   * General Public License Version 2 only ("GPL") or the Common Development
   * and Distribution License("CDDL") (collectively, the "License").  You
   * may not use this file except in compliance with the License. You can obtain
  * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
  * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
  * language governing permissions and limitations under the License.
  * 
  * When distributing the software, include this License Header Notice in each
  * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
  * Sun designates this particular file as subject to the "Classpath" exception
  * as provided by Sun in the GPL Version 2 section of the License file that
  * accompanied this code.  If applicable, add the following below the License
  * Header, with the fields enclosed by brackets [] replaced by your own
  * identifying information: "Portions Copyrighted [year]
  * [name of copyright owner]"
  * 
  * Contributor(s):
  * 
  * If you wish your version of this file to be governed by only the CDDL or
  * only the GPL Version 2, indicate your decision by adding "[Contributor]
  * elects to include this software in this distribution under the [CDDL or GPL
  * Version 2] license."  If you don't indicate a single choice of license, a
  * recipient has the option to distribute your version of this file under
  * either the CDDL, the GPL Version 2 or to extend the choice of license to
  * its licensees as provided above.  However, if you add GPL Version 2 code
  * and therefore, elected the GPL Version 2 license, then the option applies
  * only if the new code is made subject to such option by the copyright
  * holder.
  */
 
 package javax.faces.component;
 
 
Contains common utility methods used by both UISelectOne and UISelectMany.
 
 class SelectUtils {
 
 
     // ------------------------------------------------------------ Constructors
 
     
     private SelectUtils() { }
 
 
     // ------------------------------------------------- Package Private Methods
 
    

Return true if the specified value matches one of the available options, performing a recursive search if if a javax.faces.model.SelectItemGroup instance is detected.

Parameters:
ctx (@link FacesContext} for the current request
value UIComponent value to be tested
items Iterator over the javax.faces.model.SelectItems to be checked
converter the javax.faces.convert.Converter associated with this component
 
     static boolean matchValue(FacesContext ctx,
                               UIComponent component,
                               Object value,
                               Iterator items,
                               Converter converter) {
 
         while (items.hasNext()) {
             SelectItem item = (SelectItemitems.next();
             if (item instanceof SelectItemGroup) {
                 SelectItem subitems[] =
                       ((SelectItemGroupitem).getSelectItems();
                 if ((subitems != null) && (subitems.length > 0)) {
                     if (matchValue(ctxcomponentvaluenew ArrayIterator(subitems), converter)) {
                         return (true);
                     }
                 }
             } else {
                 Object itemValue = item.getValue();
                 if (itemValue == null && value == null) {
                     return (true);
                 }
                 if ((value == null) ^ (itemValue == null)) {
                     continue;
                 }
                 Object compareValue;
                if (converter == null) {
                    compareValue =
                          coerceToModelType(ctxitemValuevalue.getClass());
                } else {
                    compareValue = itemValue;
                    if (compareValue instanceof String
                        && !(value instanceof String)) {
                        // type mismatch between the time and the value we're
                        // comparing.  Invoke the Converter.
                        compareValue = converter.getAsObject(ctx,
                                                             component,
                                                             (StringcompareValue);
                    }
                }
                if (value.equals(compareValue)) {
                    return (true);
                }
            }
        }
        return (false);
    }


    
Coerce the provided value to the specified type using EL coercion.

Parameters:
ctx the javax.faces.context.FacesContext for the current request
value the value to coerce
toType the type value should be coerced to
Returns:
the result of the EL coersion
See also:
javax.el.ExpressionFactory.coerceToType(java.lang.Object,java.lang.Class)
    private static Object coerceToModelType(FacesContext ctx,
                                            Object value,
                                            Class toType) {
        Object newValue;
        try {
            ExpressionFactory ef = ctx.getApplication().getExpressionFactory();
            newValue = ef.coerceToType(valuetoType);
        } catch (ELException ele) {
            newValue = value;
        } catch (IllegalArgumentException iae) {
            // If coerceToType fails, per the docs it should throw
            // an ELException, however, GF 9.0 and 9.0u1 will throw
            // an IllegalArgumentException instead (see GF issue 1527).
            newValue = value;
        }
        return newValue;
    }
    // ---------------------------------------------------------- Nested Classes


    
Exposes an Array via an Iterator
    static class ArrayIterator implements Iterator {
        public ArrayIterator(Object items[]) {
            this. = items;
        }
        private Object items[];
        private int index = 0;
        public boolean hasNext() {
            return ( < .);
        }
        public Object next() {
            try {
                return ([++]);
            } catch (IndexOutOfBoundsException e) {
                throw new NoSuchElementException();
            }
        }
        public void remove() {
            throw new UnsupportedOperationException();
        }
    } // END ArrayIterator
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